Topiaries can be small enough to be the centerpiece on your table or large enough to flank your front door. Make a topiary from cut or sugared fruit, fresh, silk or dried flowers or foliage from the shrubs in your backyard. Before you cover the topiary with greenery, color or edibles, first make a topiary frame. The frame creates the height and the shape of your topiary. It's simple to make a topiary frame with supplies you can find at your local craft store.
Cut two 14-inch long sections of 2-inch dowel and one 6-inch long section of 2-inch dowel. A portion of each dowel will be hidden inside the floral foam balls. Adjust the height of your topiary by adjusting the length of the dowels.
Spray-paint the dowels and the floral foam balls to coordinate with the colors you plan to use in your topiary. You may also wish to spray-paint the planter so that all of the topiary frame components match. Let the paint dry.
Cut a section of the floral foam block to fit inside the planter. A serrated kitchen knife will cut the foam easily. Insert the foam into the planter so that the top of the foam is no more than 1 inch below the rim of the planter.
Insert the 6-inch-long dowel 3 inches into the center of the floral foam inside the planter. Center one of the floral foam balls on top of the other end of the dowel and press down until the foam ball meets the top of the planter.
Insert one of the 14-inch-long dowels into the center of the floral foam ball attached to the planter. Press the dowel inside the ball at least 4 inches.
Center another foam ball on top of the protruding end of the dowel. Press down until the dowel is at least 4 inches inside the ball.
Repeat steps 5 and 6 with the remaining dowel and ball.